It's one model too low to have cadence, but I have a Sigma Sport BC1009 and it's excellent. Very easy to use and read, well made and has a good feature set.
However, I feel it doesn't get said often enough that you don't NEED a wireless computer. I can vaguely get it in the case of cadence, but the savings on wired computers are considerable, and they are actually (like most wired products) more reliable. One fewer battery, too.
TT: 753 Ribble - 8 speed Campag mix, Syntace bars, Profile extensions, Mike Burrows seatpost, Selle Turbo Lite, various wheels
Pretty much everything else: 531 Claud Butler Majestic